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1/*
2 * Xilinx Zynq Baseboard System emulation.
3 *
4 * Copyright (c) 2010 Xilinx.
5 * Copyright (c) 2012 Peter A.G. Crosthwaite (peter.croshtwaite@petalogix.com)
6 * Copyright (c) 2012 Petalogix Pty Ltd.
7 * Written by Haibing Ma
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
12b16722 18#include "qemu/osdep.h"
83c9f4ca 19#include "hw/sysbus.h"
bd2be150 20#include "hw/arm/arm.h"
1422e32d 21#include "net/net.h"
022c62cb 22#include "exec/address-spaces.h"
9c17d615 23#include "sysemu/sysemu.h"
83c9f4ca 24#include "hw/boards.h"
0d09e41a 25#include "hw/block/flash.h"
fa1d36df 26#include "sysemu/block-backend.h"
83c9f4ca 27#include "hw/loader.h"
74fcbd22 28#include "hw/misc/zynq-xadc.h"
83c9f4ca 29#include "hw/ssi.h"
d8bbdcf8 30#include "qemu/error-report.h"
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31
32#define NUM_SPI_FLASHES 4
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33#define NUM_QSPI_FLASHES 2
34#define NUM_QSPI_BUSSES 2
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35
36#define FLASH_SIZE (64 * 1024 * 1024)
37#define FLASH_SECTOR_SIZE (128 * 1024)
38
39#define IRQ_OFFSET 32 /* pic interrupts start from index 32 */
40
c2577128 41#define MPCORE_PERIPHBASE 0xF8F00000
b48adc0d 42#define ZYNQ_BOARD_MIDR 0x413FC090
c2577128 43
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44static const int dma_irqs[8] = {
45 46, 47, 48, 49, 72, 73, 74, 75
46};
47
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48#define BOARD_SETUP_ADDR 0x100
49
50#define SLCR_LOCK_OFFSET 0x004
51#define SLCR_UNLOCK_OFFSET 0x008
52#define SLCR_ARM_PLL_OFFSET 0x100
53
54#define SLCR_XILINX_UNLOCK_KEY 0xdf0d
55#define SLCR_XILINX_LOCK_KEY 0x767b
56
57#define ARMV7_IMM16(x) (extract32((x), 0, 12) | \
58 extract32((x), 12, 4) << 16)
59
60/* Write immediate val to address r0 + addr. r0 should contain base offset
61 * of the SLCR block. Clobbers r1.
62 */
63
64#define SLCR_WRITE(addr, val) \
65 0xe3001000 + ARMV7_IMM16(extract32((val), 0, 16)), /* movw r1 ... */ \
66 0xe3401000 + ARMV7_IMM16(extract32((val), 16, 16)), /* movt r1 ... */ \
67 0xe5801000 + (addr)
68
69static void zynq_write_board_setup(ARMCPU *cpu,
70 const struct arm_boot_info *info)
71{
72 int n;
73 uint32_t board_setup_blob[] = {
74 0xe3a004f8, /* mov r0, #0xf8000000 */
75 SLCR_WRITE(SLCR_UNLOCK_OFFSET, SLCR_XILINX_UNLOCK_KEY),
76 SLCR_WRITE(SLCR_ARM_PLL_OFFSET, 0x00014008),
77 SLCR_WRITE(SLCR_LOCK_OFFSET, SLCR_XILINX_LOCK_KEY),
78 0xe12fff1e, /* bx lr */
79 };
80 for (n = 0; n < ARRAY_SIZE(board_setup_blob); n++) {
81 board_setup_blob[n] = tswap32(board_setup_blob[n]);
82 }
83 rom_add_blob_fixed("board-setup", board_setup_blob,
84 sizeof(board_setup_blob), BOARD_SETUP_ADDR);
85}
86
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87static struct arm_boot_info zynq_binfo = {};
88
89static void gem_init(NICInfo *nd, uint32_t base, qemu_irq irq)
90{
91 DeviceState *dev;
92 SysBusDevice *s;
93
e3260506 94 dev = qdev_create(NULL, "cadence_gem");
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95 if (nd->used) {
96 qemu_check_nic_model(nd, "cadence_gem");
97 qdev_set_nic_properties(dev, nd);
98 }
e3260506 99 qdev_init_nofail(dev);
1356b98d 100 s = SYS_BUS_DEVICE(dev);
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101 sysbus_mmio_map(s, 0, base);
102 sysbus_connect_irq(s, 0, irq);
103}
104
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105static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq,
106 bool is_qspi)
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107{
108 DeviceState *dev;
109 SysBusDevice *busdev;
110 SSIBus *spi;
79f5d67e 111 DeviceState *flash_dev;
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112 int i, j;
113 int num_busses = is_qspi ? NUM_QSPI_BUSSES : 1;
114 int num_ss = is_qspi ? NUM_QSPI_FLASHES : NUM_SPI_FLASHES;
559d489f 115
6b91f015 116 dev = qdev_create(NULL, is_qspi ? "xlnx.ps7-qspi" : "xlnx.ps7-spi");
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117 qdev_prop_set_uint8(dev, "num-txrx-bytes", is_qspi ? 4 : 1);
118 qdev_prop_set_uint8(dev, "num-ss-bits", num_ss);
119 qdev_prop_set_uint8(dev, "num-busses", num_busses);
559d489f 120 qdev_init_nofail(dev);
1356b98d 121 busdev = SYS_BUS_DEVICE(dev);
559d489f 122 sysbus_mmio_map(busdev, 0, base_addr);
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123 if (is_qspi) {
124 sysbus_mmio_map(busdev, 1, 0xFC000000);
125 }
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126 sysbus_connect_irq(busdev, 0, irq);
127
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128 for (i = 0; i < num_busses; ++i) {
129 char bus_name[16];
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130 qemu_irq cs_line;
131
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132 snprintf(bus_name, 16, "spi%d", i);
133 spi = (SSIBus *)qdev_get_child_bus(dev, bus_name);
134
135 for (j = 0; j < num_ss; ++j) {
f1922e36 136 flash_dev = ssi_create_slave(spi, "n25q128");
559d489f 137
de77914e 138 cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
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139 sysbus_connect_irq(busdev, i * num_ss + j + 1, cs_line);
140 }
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141 }
142
143}
144
3ef96221 145static void zynq_init(MachineState *machine)
e3260506 146{
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147 ram_addr_t ram_size = machine->ram_size;
148 const char *cpu_model = machine->cpu_model;
149 const char *kernel_filename = machine->kernel_filename;
150 const char *kernel_cmdline = machine->kernel_cmdline;
151 const char *initrd_filename = machine->initrd_filename;
d8bbdcf8 152 ObjectClass *cpu_oc;
17c2f0bf 153 ARMCPU *cpu;
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154 MemoryRegion *address_space_mem = get_system_memory();
155 MemoryRegion *ext_ram = g_new(MemoryRegion, 1);
156 MemoryRegion *ocm_ram = g_new(MemoryRegion, 1);
157 DeviceState *dev;
158 SysBusDevice *busdev;
e3260506 159 qemu_irq pic[64];
e3260506 160 int n;
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161
162 if (!cpu_model) {
163 cpu_model = "cortex-a9";
164 }
d8bbdcf8 165 cpu_oc = cpu_class_by_name(TYPE_ARM_CPU, cpu_model);
e3260506 166
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167 cpu = ARM_CPU(object_new(object_class_get_name(cpu_oc)));
168
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169 /* By default A9 CPUs have EL3 enabled. This board does not
170 * currently support EL3 so the CPU EL3 property is disabled before
171 * realization.
172 */
173 if (object_property_find(OBJECT(cpu), "has_el3", NULL)) {
007b0657 174 object_property_set_bool(OBJECT(cpu), false, "has_el3", &error_fatal);
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175 }
176
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177 object_property_set_int(OBJECT(cpu), ZYNQ_BOARD_MIDR, "midr",
178 &error_fatal);
179 object_property_set_int(OBJECT(cpu), MPCORE_PERIPHBASE, "reset-cbar",
180 &error_fatal);
181 object_property_set_bool(OBJECT(cpu), true, "realized", &error_fatal);
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182
183 /* max 2GB ram */
184 if (ram_size > 0x80000000) {
185 ram_size = 0x80000000;
186 }
187
188 /* DDR remapped to address zero. */
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189 memory_region_allocate_system_memory(ext_ram, NULL, "zynq.ext_ram",
190 ram_size);
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191 memory_region_add_subregion(address_space_mem, 0, ext_ram);
192
193 /* 256K of on-chip memory */
49946538 194 memory_region_init_ram(ocm_ram, NULL, "zynq.ocm_ram", 256 << 10,
f8ed85ac 195 &error_fatal);
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196 vmstate_register_ram_global(ocm_ram);
197 memory_region_add_subregion(address_space_mem, 0xFFFC0000, ocm_ram);
198
199 DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0);
200
201 /* AMD */
202 pflash_cfi02_register(0xe2000000, NULL, "zynq.pflash", FLASH_SIZE,
4be74634 203 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
fa1d36df 204 FLASH_SECTOR_SIZE,
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205 FLASH_SIZE/FLASH_SECTOR_SIZE, 1,
206 1, 0x0066, 0x0022, 0x0000, 0x0000, 0x0555, 0x2aa,
207 0);
208
209 dev = qdev_create(NULL, "xilinx,zynq_slcr");
210 qdev_init_nofail(dev);
1356b98d 211 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xF8000000);
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212
213 dev = qdev_create(NULL, "a9mpcore_priv");
214 qdev_prop_set_uint32(dev, "num-cpu", 1);
215 qdev_init_nofail(dev);
1356b98d 216 busdev = SYS_BUS_DEVICE(dev);
c2577128 217 sysbus_mmio_map(busdev, 0, MPCORE_PERIPHBASE);
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218 sysbus_connect_irq(busdev, 0,
219 qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ));
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220
221 for (n = 0; n < 64; n++) {
222 pic[n] = qdev_get_gpio_in(dev, n);
223 }
224
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225 zynq_init_spi_flashes(0xE0006000, pic[58-IRQ_OFFSET], false);
226 zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET], false);
227 zynq_init_spi_flashes(0xE000D000, pic[51-IRQ_OFFSET], true);
559d489f 228
892776ce 229 sysbus_create_simple("xlnx,ps7-usb", 0xE0002000, pic[53-IRQ_OFFSET]);
70ef6a5b 230 sysbus_create_simple("xlnx,ps7-usb", 0xE0003000, pic[76-IRQ_OFFSET]);
892776ce 231
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232 sysbus_create_simple("cadence_uart", 0xE0000000, pic[59-IRQ_OFFSET]);
233 sysbus_create_simple("cadence_uart", 0xE0001000, pic[82-IRQ_OFFSET]);
234
235 sysbus_create_varargs("cadence_ttc", 0xF8001000,
236 pic[42-IRQ_OFFSET], pic[43-IRQ_OFFSET], pic[44-IRQ_OFFSET], NULL);
237 sysbus_create_varargs("cadence_ttc", 0xF8002000,
238 pic[69-IRQ_OFFSET], pic[70-IRQ_OFFSET], pic[71-IRQ_OFFSET], NULL);
239
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240 gem_init(&nd_table[0], 0xE000B000, pic[54-IRQ_OFFSET]);
241 gem_init(&nd_table[1], 0xE000C000, pic[77-IRQ_OFFSET]);
e3260506 242
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243 dev = qdev_create(NULL, "generic-sdhci");
244 qdev_init_nofail(dev);
245 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xE0100000);
246 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[56-IRQ_OFFSET]);
247
248 dev = qdev_create(NULL, "generic-sdhci");
249 qdev_init_nofail(dev);
250 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xE0101000);
251 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[79-IRQ_OFFSET]);
252
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253 dev = qdev_create(NULL, TYPE_ZYNQ_XADC);
254 qdev_init_nofail(dev);
255 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xF8007100);
256 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[39-IRQ_OFFSET]);
257
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258 dev = qdev_create(NULL, "pl330");
259 qdev_prop_set_uint8(dev, "num_chnls", 8);
260 qdev_prop_set_uint8(dev, "num_periph_req", 4);
261 qdev_prop_set_uint8(dev, "num_events", 16);
262
263 qdev_prop_set_uint8(dev, "data_width", 64);
264 qdev_prop_set_uint8(dev, "wr_cap", 8);
265 qdev_prop_set_uint8(dev, "wr_q_dep", 16);
266 qdev_prop_set_uint8(dev, "rd_cap", 8);
267 qdev_prop_set_uint8(dev, "rd_q_dep", 16);
268 qdev_prop_set_uint16(dev, "data_buffer_dep", 256);
269
270 qdev_init_nofail(dev);
271 busdev = SYS_BUS_DEVICE(dev);
272 sysbus_mmio_map(busdev, 0, 0xF8003000);
273 sysbus_connect_irq(busdev, 0, pic[45-IRQ_OFFSET]); /* abort irq line */
274 for (n = 0; n < 8; ++n) { /* event irqs */
275 sysbus_connect_irq(busdev, n + 1, pic[dma_irqs[n] - IRQ_OFFSET]);
276 }
277
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278 zynq_binfo.ram_size = ram_size;
279 zynq_binfo.kernel_filename = kernel_filename;
280 zynq_binfo.kernel_cmdline = kernel_cmdline;
281 zynq_binfo.initrd_filename = initrd_filename;
282 zynq_binfo.nb_cpus = 1;
283 zynq_binfo.board_id = 0xd32;
284 zynq_binfo.loader_start = 0;
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285 zynq_binfo.board_setup_addr = BOARD_SETUP_ADDR;
286 zynq_binfo.write_board_setup = zynq_write_board_setup;
287
182735ef 288 arm_load_kernel(ARM_CPU(first_cpu), &zynq_binfo);
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289}
290
e264d29d 291static void zynq_machine_init(MachineClass *mc)
e3260506 292{
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293 mc->desc = "Xilinx Zynq Platform Baseboard for Cortex-A9";
294 mc->init = zynq_init;
295 mc->block_default_type = IF_SCSI;
296 mc->max_cpus = 1;
297 mc->no_sdcard = 1;
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298}
299
e264d29d 300DEFINE_MACHINE("xilinx-zynq-a9", zynq_machine_init)